Availability
OLDSMOBILE Differential & Rear-End Components
Differential Bearing, Tapered Roller, Steel, Stock Replacement, GM, Each
Part Number: ADO-S1420
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Spool, Mini, Steel, 28-Spline, 10-Bolt, GM 8.5 in., Each
Part Number: RMG-78-1028-1
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Ring Gear Spacer, GM 7.5 in. Ring Gear, Hardware Included, Each
Part Number: MGR-075050
Estimated Ship Date: Feb 17, 2026 if ordered today
Estimated Ship Date: Feb 17, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
8.5" GM PINION KIT, KOYO BRGS
Part Number: SPZ-60012
Not Yet Reviewed
Estimated Ship Date: Feb 16, 2026 if ordered today
Estimated Ship Date: Feb 16, 2026 if ordered today
Ring and Pinion Installation Kit, GM, 12-Bolt, 8.875 in. Diameter Ring Gear, 30-Spline Pinion, Kit
Part Number: RMG-831019B
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Spacer, Replacement, Active Spacer, Each
Part Number: PWT-624004SDG2
Not Yet Reviewed
Estimated Ship Date: Mar 17, 2026 if ordered today
Estimated Ship Date: Mar 17, 2026 if ordered today
Differential Cover, 10-bolt, Steel, Natural, GM 8.0 in., Each
Part Number: YGA-32360
Estimated Ship Date: Feb 27, 2026 if ordered today
Estimated Ship Date: Feb 27, 2026 if ordered today
Ring and Pinion Installation Kit, GM, 12-Bolt Passenger Car, 8.875 in. Open, Kit
Part Number: MGR-GM12IKC
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Ring Gear Spacer, 0.200 in. Thick, 10-bolt, GM 8.5 in., Each
Part Number: MGR-085050
Estimated Ship Date: Feb 17, 2026 if ordered today
Estimated Ship Date: Feb 17, 2026 if ordered today
Differential Main Cap Studs, GM, Kit
Part Number: YGA-32271
Not Yet Reviewed
Estimated Ship Date: Mar 2, 2026 if ordered today
Estimated Ship Date: Mar 2, 2026 if ordered today
Mini Spool, MINI SPOOL GM 7 1/2" 28 SPL
Part Number: RMG-XL-5131
Not Yet Reviewed
Estimated Ship Date: Feb 16, 2026 if ordered today
Estimated Ship Date: Feb 16, 2026 if ordered today
SOLID SPACER & SHIM KIT GM12 BOLT CAR
Part Number: MGR-4101
Not Yet Reviewed
Estimated Ship Date: Feb 16, 2026 if ordered today
Estimated Ship Date: Feb 16, 2026 if ordered today
Pinion Bearing Kit, PBK GM 8.875" CAR
Part Number: MGR-R12CRPK
Not Yet Reviewed
Estimated Ship Date: Feb 16, 2026 if ordered today
Estimated Ship Date: Feb 16, 2026 if ordered today
Ring and Pinion Installation Kit, Basic, GM 8.5 in., Front/Rear, Kit
Part Number: MGR-R10RTPK
Not Yet Reviewed
Estimated Ship Date: Feb 17, 2026 if ordered today
Estimated Ship Date: Feb 17, 2026 if ordered today
Ring and Pinion Gear Installation Kit, Minimum Install, 27-spline, Standard Rotation, Rear, GM 8.2 in., BOP Axle, Kit
Part Number: YGA-12054
Not Yet Reviewed
Estimated Ship Date: Mar 2, 2026 if ordered today
Estimated Ship Date: Mar 2, 2026 if ordered today
Cross Pin Shaft, Notched, Steel, Rear, GM 7.5 in., GM 7.6 in., Each
Part Number: YGA-33435
Not Yet Reviewed
Estimated Ship Date: Mar 2, 2026 if ordered today
Estimated Ship Date: Mar 2, 2026 if ordered today
Cross Shaft, Differential, Steel, GM 8.5 in., with Mini-Spool, Each
Part Number: YGA-32238
Not Yet Reviewed
Estimated Ship Date: Mar 2, 2026 if ordered today
Estimated Ship Date: Mar 2, 2026 if ordered today
Axle Shaft, OEM Replacement, C-clip, 1541H Alloy Steel, 28-spline Inner, 30.438 in. Length, Each
Part Number: MGR-25501599
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
COUPLER
Part Number: PWT-1932504CCN
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Axle Shaft, Direct Fit, CV-Style, Front Passenger Side, Oldsmobile, Pontiac, Each
Part Number: AAZ-66-1337
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Differential Cover, 10-bolt, Steel, Natural, GM 7.5 in., GM 7.625 in., Each
Part Number: YGA-32331
Not Yet Reviewed
Estimated Ship Date: Mar 2, 2026 if ordered today
Estimated Ship Date: Mar 2, 2026 if ordered today
Four Wheel Drive Differential Gear Kit
Part Number: RNB-600-561
Not Yet Reviewed
Estimated Ship Date: Feb 18, 2026 if ordered today
Estimated Ship Date: Feb 18, 2026 if ordered today
Axle Shaft Only, Buick 1986-77, Chevrolet 1990-77, Oldsmobile 1986-77, Pontiac 1986-83, 1981-77
Part Number: RNB-630-113A
Not Yet Reviewed
Estimated Ship Date: Feb 18, 2026 if ordered today
Estimated Ship Date: Feb 18, 2026 if ordered today
Axle Shaft Only, Buick 1996-89, Chevrolet 1996-89, Oldsmobile 1992-89, Pontiac 1989
Part Number: RNB-630-118A
Not Yet Reviewed
Estimated Ship Date: Feb 18, 2026 if ordered today
Estimated Ship Date: Feb 18, 2026 if ordered today
Front Axle Actuator, Vacuum, Buick, Chevy, GMC, Isuzu, Oldsmobile, Each
Part Number: RNB-600-103
Estimated Ship Date: Feb 18, 2026 if ordered today
Estimated Ship Date: Feb 18, 2026 if ordered today
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